弛豫铁电单晶的生长及性能优化研究进展  

Research Progress on the Growth and Property Optimization of Relaxor Ferroelectric Single Crystals

作　　者：刘杨彬 李谦[1] 肖若愚 徐卓[1] 李飞[1] LIU Yangbin;LI Qian;XIAO Ruoyu;XU Zhuo;LI Fei(Electronic Materials Research Laboratory,Key Laboratory of the Ministry of Education,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]西安交通大学,多功能材料与结构教育部重点实验室,西安710049

出　　处：《人工晶体学报》2022年第9期1643-1658,共16页Journal of Synthetic Crystals

基　　金：国家自然科学基金(51922083)。

摘　　要：钙钛矿型(ABO_(3))弛豫铁电单晶具有优异的机电耦合性能,被认为是研制下一代医疗超声换能器、高精度压电驱动器、水声换能器等机电耦合器件的核心关键材料。针对弛豫铁电单晶材料制备与物理性能方面尚存在的基础科学与工艺问题,本文综述了近些年弛豫铁电单晶生长与性能优化方面的研究进展,包括若干新的单晶生长方法用以改善弛豫铁电单晶的成分和性能均匀性,提升弛豫铁电单晶压电性能的系列新方法,通过铁电畴结构调控以获得高透光率的弛豫铁电单晶,以及高性能弛豫铁电单晶在电光技术领域的应用等。Relaxor ferroelectric single crystals with perovskite(ABO_(3))structure possess excellent electromechanical coupling properties and are considered as the key materials of next-generation medical ultrasound transducers,high-precision piezoelectric actuators,and underwater acoustic transducers.According to the existing fundamental science and material preparation issues in relaxor ferroelectric crystals,this manuscript reviews the research progresses on the crystal growth and property optimization of relaxor ferroelectric singles in recent years.This review covers the following aspects:new crystal growth methods for enhancing the uniformity of composition and properties;new methods to improve the piezoelectric properties of relaxor ferroelectric single crystals;the control of ferroelectric domain structure to achieve high-light transmittance of relaxor ferroelectric crystals;the application of high-performance relaxor ferroelectric single crystals in the field of electro-optical technology.

关 键 词：弛豫铁电体 单晶生长 布里奇曼法 畴工程 掺杂 性能优化 压电性能 

分 类 号：TM22[一般工业技术—材料科学与工程]